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Key: test item, instrument name, total nonvolatile migration, gravimeter, moisture permeameter
Food Contact Materials
Release time:
2021-08-31
Food safety is a major basic livelihood issue. Food is the most important thing for the people, and safety is the minimum requirement for food consumption, otherwise the color, aroma and nutrition will not be considered. For food packaging, its purpose is not only to assist transportation and storage, food contact materials can directly affect food safety.
As food safety issues become more prominent, the quality supervision of food contact materials has become more stringent. National draws, provincial draws, etc. are becoming more frequent, and there are also a wide variety of unqualified categories.
In the spot check results, water vapor transmission rate, oxygen transmission rate and total migration are often unqualified test items on the list. The first two are collectively referred to as barrier properties, which are important physical properties of food contact materials to block external humidity and oxygen to ensure that food is not polluted or deteriorated by the environment; and the total migration is the chemical properties of the food contact material itself. In contact with food, the material itself will gradually migrate into the food, affecting food safety.
To improve the quality of food contact materials, pharmaceutical companies cannot rely solely on the quality control of materials companies. Pharmaceutical companies themselves must also improve the quality control of food contact materials and strengthen daily quality inspections. However, there are various testing instruments on the market. Some instrument manufacturers falsely responded to the experimental elements specified in the standards and altered the data calculation formulas specified in the standards, resulting in users not being able to obtain real data that meet the requirements of the standards, and that did not meet the requirements of laboratory equipment. Data authenticity.
Xitang Technology has developed and produced the world's first water vapor transmission rate tester with an integrated cup method for weight increase and decrease. The process data is consistent with the result data, and the authenticity and consistency of the data required by the laboratory is the national standard. Fixed value equipment;
Introduced the technology of the Chinese Academy of Sciences and launched the infrared water vapor transmission rate tester equipped with TDLas laser technology, which does not attenuate and does not require regular calibration, and the long optical path light wave is more stable, and the technology surpasses many imported brands;
Electrolysis water vapor transmission rate tester equipped with self-developed micro-water electrolysis sensor. 10μm electrode distance, PPB level high precision, won the "Yunchuang Cup" 2020 Innovation and Entrepreneurship Competition Winner Award.
Patented pressure difference oxygen transmission rate tester without filter paper technology. The rapid 5-minute vacuum technology eliminates the influence of filter paper, and the accuracy is as high as 0.001cm/㎡*day, which is an order of magnitude more precise than traditional technology.
The patented total migration constant weight meter integrates water bath evaporation, heating and drying, drying and cooling, and constant temperature weighing. It replaces traditional water bath pots, ovens, drying ovens and balances. 2 processes complete 0.3mg constant weight weighing.
Xitang Technology is committed to packaging and material testing technology, and is willing to work with all friends to continuously improve the quality control of the industry.
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Related Applications
Evaporating Residue, Non-volatile Residue
2021-09-01
Pharmacy is a very rigorous process, and the quality of water has a major impact on the quality of pharmaceuticals. Ordinary water contains many trace elements and other substances, which cannot meet the needs of pharmaceutical production. Only purified water that meets the requirements can be used in pharmaceutical production. In this regard, the state has formulated a number of testing items to monitor the quality of purified water, and "non-volatile matter" is the most "torturing" item. The "most tortured" person in non-volatile matter testing? According to the Pharmacopoeia, 100ml of purified water is placed in an evaporating dish with constant weight to evaporate to dryness, and after drying to constant weight, the remaining residue shall not exceed 1mg; in addition, according to the general requirements of the Pharmacopoeia, the constant weight needs to be dried twice and weighed. The difference is less than 0.3mg. The 0.3mg constant weight requirement is very difficult for manual operation, so too many experimenters always struggle with this, and they think that the non-volatile item is too torturous. How to solve this "torture" problem? In today's increasingly high degree of automation, Xitang Technology has given the answer-a non-volatile constant weight meter. The constant weight instrument developed and designed by Xitang specifically to meet the requirements of constant weight, integrates the functions of water bath evaporation, heating and drying, drying and cooling, and constant temperature weighing. Instead of traditional water bath, oven, drying oven and balance, 2 weighing processes can achieve constant weight weighing. It not only perfectly meets the requirements of the standard 100%, but also greatly improves the efficiency of constant weight and the accuracy of the experiment. At this point, the "torturing" experiment is no longer tortured, the experimenter only needs to install the sample, and the rest is handed over to the automation. At present, more than ten listed pharmaceutical companies have applied the constant weight instrument for quality inspection. The constant weight instrument in the pharmaceutical industry can also be applied to: non-volatile matter in extracts of pharmaceutical packaging materials, loss on drying of raw materials, extracts of traditional Chinese medicines, and other constant weight requirements experiments. Purified Water Non-volatile Residue Constant Weight Tester——Relative Products： Constant Weight Tester 12 specimens, integrated the functions of evaporating, heating, drying, constant temperature weighing. Constant Weight Tester 23 specimens, integrated the functions of evaporating, heating, drying, constant temperature weighing. Constant Weight Tester 48 specimens, integrated the functions of evaporating, heating, drying, constant temperature weighing. Constant Weight Tester 12 specimens, integrated the functions of heating, drying, constant temperature weighing.
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